It's not just for those who've seen the film. People can talk in general about the film without actually discussing specifics. Out of common courtesy, it takes an extra to and click the spoiler tag when getting more in-depth.

How can you talk about what you liked in the film without spoiling people? What constitutes a spoiler and what doesn't? And how can you want to go into a thread where people talk about what they've seen in the movie without wanting to be spoiled? I Don't Get It. It's contrary to any spoiler policy I've met elsewhere, so if this is specific to this forum, then it should be signposted.